| /* |
| This file is part of libmicrohttpd |
| Copyright (C) 2015, 2016 Karlson2k (Evgeny Grin) |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file microhttpd/mhd_str.h |
| * @brief Header for string manipulating helpers |
| * @author Karlson2k (Evgeny Grin) |
| */ |
| |
| #ifndef MHD_STR_H |
| #define MHD_STR_H 1 |
| |
| #include "mhd_options.h" |
| |
| #include <stdint.h> |
| #include <stdlib.h> |
| #ifdef HAVE_STDBOOL_H |
| #include <stdbool.h> |
| #endif /* HAVE_STDBOOL_H */ |
| |
| #ifdef MHD_FAVOR_SMALL_CODE |
| #include "mhd_limits.h" |
| #endif /* MHD_FAVOR_SMALL_CODE */ |
| |
| #ifndef MHD_STATICSTR_LEN_ |
| /** |
| * Determine length of static string / macro strings at compile time. |
| */ |
| #define MHD_STATICSTR_LEN_(macro) (sizeof(macro) / sizeof(char) - 1) |
| #endif /* ! MHD_STATICSTR_LEN_ */ |
| |
| /* |
| * Block of functions/macros that use US-ASCII charset as required by HTTP |
| * standards. Not affected by current locale settings. |
| */ |
| |
| #ifndef MHD_FAVOR_SMALL_CODE |
| /** |
| * Check two string for equality, ignoring case of US-ASCII letters. |
| * @param str1 first string to compare |
| * @param str2 second string to compare |
| * @return non-zero if two strings are equal, zero otherwise. |
| */ |
| int |
| MHD_str_equal_caseless_ (const char *str1, |
| const char *str2); |
| |
| #else /* MHD_FAVOR_SMALL_CODE */ |
| /* Reuse MHD_str_equal_caseless_n_() to reduce size */ |
| #define MHD_str_equal_caseless_(s1,s2) MHD_str_equal_caseless_n_ ((s1),(s2), \ |
| SIZE_MAX) |
| #endif /* MHD_FAVOR_SMALL_CODE */ |
| |
| |
| /** |
| * Check two string for equality, ignoring case of US-ASCII letters and |
| * checking not more than @a maxlen characters. |
| * Compares up to first terminating null character, but not more than |
| * first @a maxlen characters. |
| * @param str1 first string to compare |
| * @param str2 second string to compare |
| * @param maxlen maximum number of characters to compare |
| * @return non-zero if two strings are equal, zero otherwise. |
| */ |
| int |
| MHD_str_equal_caseless_n_ (const char *const str1, |
| const char *const str2, |
| size_t maxlen); |
| |
| |
| /** |
| * Check whether @a str has case-insensitive @a token. |
| * Token could be surrounded by spaces and tabs and delimited by comma. |
| * Match succeed if substring between start, end of string or comma |
| * contains only case-insensitive token and optional spaces and tabs. |
| * @warning token must not contain null-charters except optional |
| * terminating null-character. |
| * @param str the string to check |
| * @param token the token to find |
| * @param token_len length of token, not including optional terminating |
| * null-character. |
| * @return non-zero if two strings are equal, zero otherwise. |
| */ |
| bool |
| MHD_str_has_token_caseless_ (const char *str, |
| const char *const token, |
| size_t token_len); |
| |
| /** |
| * Check whether @a str has case-insensitive static @a tkn. |
| * Token could be surrounded by spaces and tabs and delimited by comma. |
| * Match succeed if substring between start, end of string or comma |
| * contains only case-insensitive token and optional spaces and tabs. |
| * @warning tkn must be static string |
| * @param str the string to check |
| * @param tkn the static string of token to find |
| * @return non-zero if two strings are equal, zero otherwise. |
| */ |
| #define MHD_str_has_s_token_caseless_(str,tkn) \ |
| MHD_str_has_token_caseless_ ((str),(tkn),MHD_STATICSTR_LEN_ (tkn)) |
| |
| #ifndef MHD_FAVOR_SMALL_CODE |
| /* Use individual function for each case to improve speed */ |
| |
| /** |
| * Convert decimal US-ASCII digits in string to number in uint64_t. |
| * Conversion stopped at first non-digit character. |
| * @param str string to convert |
| * @param out_val pointer to uint64_t to store result of conversion |
| * @return non-zero number of characters processed on succeed, |
| * zero if no digit is found, resulting value is larger |
| * then possible to store in uint64_t or @a out_val is NULL |
| */ |
| size_t |
| MHD_str_to_uint64_ (const char *str, |
| uint64_t *out_val); |
| |
| /** |
| * Convert not more then @a maxlen decimal US-ASCII digits in string to |
| * number in uint64_t. |
| * Conversion stopped at first non-digit character or after @a maxlen |
| * digits. |
| * @param str string to convert |
| * @param maxlen maximum number of characters to process |
| * @param out_val pointer to uint64_t to store result of conversion |
| * @return non-zero number of characters processed on succeed, |
| * zero if no digit is found, resulting value is larger |
| * then possible to store in uint64_t or @a out_val is NULL |
| */ |
| size_t |
| MHD_str_to_uint64_n_ (const char *str, |
| size_t maxlen, |
| uint64_t *out_val); |
| |
| |
| /** |
| * Convert hexadecimal US-ASCII digits in string to number in uint32_t. |
| * Conversion stopped at first non-digit character. |
| * @param str string to convert |
| * @param out_val pointer to uint32_t to store result of conversion |
| * @return non-zero number of characters processed on succeed, |
| * zero if no digit is found, resulting value is larger |
| * then possible to store in uint32_t or @a out_val is NULL |
| */ |
| size_t |
| MHD_strx_to_uint32_ (const char *str, |
| uint32_t *out_val); |
| |
| |
| /** |
| * Convert not more then @a maxlen hexadecimal US-ASCII digits in string |
| * to number in uint32_t. |
| * Conversion stopped at first non-digit character or after @a maxlen |
| * digits. |
| * @param str string to convert |
| * @param maxlen maximum number of characters to process |
| * @param out_val pointer to uint32_t to store result of conversion |
| * @return non-zero number of characters processed on succeed, |
| * zero if no digit is found, resulting value is larger |
| * then possible to store in uint32_t or @a out_val is NULL |
| */ |
| size_t |
| MHD_strx_to_uint32_n_ (const char *str, |
| size_t maxlen, |
| uint32_t *out_val); |
| |
| |
| /** |
| * Convert hexadecimal US-ASCII digits in string to number in uint64_t. |
| * Conversion stopped at first non-digit character. |
| * @param str string to convert |
| * @param out_val pointer to uint64_t to store result of conversion |
| * @return non-zero number of characters processed on succeed, |
| * zero if no digit is found, resulting value is larger |
| * then possible to store in uint64_t or @a out_val is NULL |
| */ |
| size_t |
| MHD_strx_to_uint64_ (const char *str, |
| uint64_t *out_val); |
| |
| |
| /** |
| * Convert not more then @a maxlen hexadecimal US-ASCII digits in string |
| * to number in uint64_t. |
| * Conversion stopped at first non-digit character or after @a maxlen |
| * digits. |
| * @param str string to convert |
| * @param maxlen maximum number of characters to process |
| * @param out_val pointer to uint64_t to store result of conversion |
| * @return non-zero number of characters processed on succeed, |
| * zero if no digit is found, resulting value is larger |
| * then possible to store in uint64_t or @a out_val is NULL |
| */ |
| size_t |
| MHD_strx_to_uint64_n_ (const char *str, |
| size_t maxlen, |
| uint64_t *out_val); |
| |
| #else /* MHD_FAVOR_SMALL_CODE */ |
| /* Use one universal function and macros to reduce size */ |
| |
| /** |
| * Generic function for converting not more then @a maxlen |
| * hexadecimal or decimal US-ASCII digits in string to number. |
| * Conversion stopped at first non-digit character or after @a maxlen |
| * digits. |
| * To be used only within macro. |
| * @param str the string to convert |
| * @param maxlen the maximum number of characters to process |
| * @param out_val the pointer to uint64_t to store result of conversion |
| * @param val_size the size of variable pointed by @a out_val |
| * @param max_val the maximum decoded number |
| * @param base the numeric base, 10 or 16 |
| * @return non-zero number of characters processed on succeed, |
| * zero if no digit is found, resulting value is larger |
| * then @ max_val or @a out_val is NULL |
| */ |
| size_t |
| MHD_str_to_uvalue_n_ (const char *str, |
| size_t maxlen, |
| void *out_val, |
| size_t val_size, |
| uint64_t max_val, |
| int base); |
| |
| #define MHD_str_to_uint64_(s,ov) MHD_str_to_uvalue_n_ ((s),SIZE_MAX,(ov), \ |
| sizeof(uint64_t), \ |
| UINT64_MAX,10) |
| |
| #define MHD_str_to_uint64_n_(s,ml,ov) MHD_str_to_uvalue_n_ ((s),(ml),(ov), \ |
| sizeof(uint64_t), \ |
| UINT64_MAX,10) |
| |
| #define MHD_strx_to_sizet_(s,ov) MHD_str_to_uvalue_n_ ((s),SIZE_MAX,(ov), \ |
| sizeof(size_t),SIZE_MAX, \ |
| 16) |
| |
| #define MHD_strx_to_sizet_n_(s,ml,ov) MHD_str_to_uvalue_n_ ((s),(ml),(ov), \ |
| sizeof(size_t), \ |
| SIZE_MAX,16) |
| |
| #define MHD_strx_to_uint32_(s,ov) MHD_str_to_uvalue_n_ ((s),SIZE_MAX,(ov), \ |
| sizeof(uint32_t), \ |
| UINT32_MAX,16) |
| |
| #define MHD_strx_to_uint32_n_(s,ml,ov) MHD_str_to_uvalue_n_ ((s),(ml),(ov), \ |
| sizeof(uint32_t), \ |
| UINT32_MAX,16) |
| |
| #define MHD_strx_to_uint64_(s,ov) MHD_str_to_uvalue_n_ ((s),SIZE_MAX,(ov), \ |
| sizeof(uint64_t), \ |
| UINT64_MAX,16) |
| |
| #define MHD_strx_to_uint64_n_(s,ml,ov) MHD_str_to_uvalue_n_ ((s),(ml),(ov), \ |
| sizeof(uint64_t), \ |
| UINT64_MAX,16) |
| |
| #endif /* MHD_FAVOR_SMALL_CODE */ |
| |
| #endif /* MHD_STR_H */ |
